Strainer



Sept. 2, 1930. w, MORSE El AL I 1,774. 758

STRAINER Filed Aug. 16, 1928 2 Sheets-Sheet l 62 65 Alberf Morse Wn/fer E. wollheim INVENTORS Wm I A TTORNE Y -Sept 2, 1930.

A. w. MORSE-ET KL 1,774,758

STRAINER Filed Aug. 16, 1928 2 Sheets-Sheet 2 IN VEN TORS A TTORNEY Patented Sept. 2-, 1 930 1 1 I.-Y.,'AssIG1\ToR s o' THE ANTHONY sortie-Anton LONGISLANDCIlTYi New YORK,"

A co 'roRATroN or NEW YORK which structure is equipped with means byscreenand its chamber has a separatedrain connection, the cut-out I means admitting a purg ng med umfthrough the steam -VQIIY;EHI;

whichone of thestrainer screenscanbe cut out for cleaning ,or repairing withoutinterr'upting I the, flow of v the liquid through i the otherscreenL Infthe application abovereferredjto, the strainer structure has a single a r OIf SlZGELHl blow-Iout connect on, and each 7 connection to that particular strainer. screen only whichis notin use] This purging mediumus' then dischargedthrough the drain connection whicha Communicates with the screenthatisibeing purged, ltisthe par ticu'lar object ofthe'invention to provide cutout neans for either one, of the screens which not only admlt the, pL1I'gl11g, II16d -111m to that screen WlllClIlS 'notinuse, but simultaneously open a singledrain connectionwit-h which the structure is provided-l, and permit the blowing out of that screen without manipulating separate drain plugs-or; valves for each of the two'scr'eens, 1 1

' In "the drawings; Fig. tioi1al vi ew through a. strainer structure showing; a preferred embodiment of; the invention; 2 is, a horizontalsectional view along, tli'lplaheof line; 2 2 in Fig. '1; Fig, 3kis horizontal fragmentary sectional view along the plane offlline inFig; 1; Fig. f4; is a'li oriz ontal -s'ectional viewalongthe f plane oflinelfl+4iiniliig "1 and ;-5 is a, vertical cross sectionalview along the plane or line. 5-15,;in Eig, 4,. Like characters of reference denote similar parts; throughout the several views" and the 1 following specification; I

v 101s hoiie itesiagtr heathen? I a long shape. *lllisfabridge wall; extending 7 I p v i connectsiwall 32 \vit hle'nd 36 Qfithe-key 31.

vacross the upperlpart time inside of; the

casing 10 dividing. the same into a lower or pipe, in communication with the outlet cham-h bcr l8bypa'ssages 22,23 and 24. Casing l0 1 verticaljsecsTnAINER Application filed August'16, 192s. Serial'No. 300,034.

inlet chamber 12 and i an, upper or} outlet enenaww; onsn, 0 Fo nsrH LLs, AND WAL ER E. WQLLHEIM onNnwonm;

chamberld. Symmetricallydisposedatieachside, of the top of the casing lOvvis a vhollow cap 14, closed at its top, projecting through" the outlet chamber l3, andQbeing threaded,

verticalwall of the cap 14 between the top vof: the casing and its wall 11 is provided with opening 17. The lowerg end,of-tl1e cap 14 terminates in a cylindricalextension 18 some v what smaller in its outer dia'rnetertha'n the. threaded portion; 4

over the egtensionj 18. Casing-.1 0. is provided at its front 1 with .a cylindrical ex 7 tens on 20, internally threaded at 21 for a is provided with a similar extension atvits back, similarly threaded at 26, this extension beingi i-communication with the .inletchamber 12 by passages27, 28,29 and 30.

betweentaps'lt, between itsQtop-wall, wall] l1 and its bottom wall. '32 is a solidl-wall extending across the central part' ot the key 131 about incline with wall 11 of-the casing 10. The upper partiof the key 3lbetwjeenn the top wall of casing 10,}and wall ll hasla.

' substantially rectangular opening .133 i into i hollo w center 34. This opening'is of such width that it forms a continuous; passage from opening 23toopening 22, o fgtromzopenr- 7 ing 24 to opening. 22 when rotated /lp re o-u lution'f; Attention; is particularly drawn to the fact that when openings 23.211161 2 2 arein communication through hollow center, 34;, a

24,: and vice versa, -when rotatedi revolu h tion,jwall.35 closes opening 28, whileopen ings 22$ and24 are 'registeringfthrough the hollo center; 34:. Thelower-part'o'flthe key is altapering. cut-out key, rotatflbly fitted inthe casing 10, preferably centrally,

into the wall ll atl5,a shoulder lifi inaking a tight, seat against-thetop of-the casing. The e e 19 is; a-fcup-shaped strainer basket made of perforatedsheetfl metal or the like, havingits open. end ,fitted, 1

solidwall 35 of thekey 31 closes opening.

"31 terminates: ina zplu-g 60 which has asolid wall as; fitted tightly; ingthebottom of the. e a

casing s 1Q.,;- A vertical '1 central partition '37 This partition is so disposed that itjconn V openings 28 and .29 while cutting out opening 30 when the upper part of the key 31 connects opening 22 and 23, and similarly connects openings 29 and '30 and cuts out opening 29 when rotated A turn, while its upper part connects openings 22 and 24:. The

plug 60 is'hollow below wall 36, having an open central port 61. 62 is a port through the sides ofplug 60, and 63 and 64 are ducts fromthe, chamber '12 diametrically disposed through both sides of the walls within which plug 60 is fitted and disposed in the same horizontal plane as port 62. Port 62 is of such width that'it re isters with duct 63 in one position and with duct64 when rotated a l; revolution. 65 is an outlet at the bottom of thestrainer below port 61 at the bottom of plug 60. 66 is a valve which may bescrewed into this outlet 65, if so desired.

Attention is particularly called to the fact that whileonly one ofthe ducts 63 or 6% communicateswith port 62 at anyone time, either one or the other is always in communication of the casing 10 in a segmental path 4:1 and is limited in its travel to a V, revolution by the ends 420f the path 11 which is partially V cutin the outer wall of casing 10. 42 is a bonnet over spindle 38 screwed into the top of casing 10 and 4:3 is a stufiing lOOX nut. 44 1s a spring pi-ess1ng-' aga1nst the top of the cut-out key 31 to cause its sides to [it tightly 1 registering with opening '22 by wall 35, and,

si mllarly, when 'key'31- is rotated turn,

against their bearings in casing 10. In the rear of the casing on top of extension 25 1s a boss 45 threaded to receive an elbow connection 46 and a valve 47. 4:8is a circumferential groove in part of the upper wall in communication with boss and connection 46 through an angularly disposed duct 49. This groove is so arranged as to register with opening 2 1 only. when the same is cutoff from groove48 registers with opening 23. In both positions, however, groove 48 is in comm unicationwithelbow connection 46 through duct 49. Also, while groove 48 registers with.

opening;24, port registers with duct 6 1 i and w th duct63 only when groove 18 registers with opening 23. V

. The operation of the straineris as follows:

When the strainer is in the position shown in the drawings, oil or other'liquid to be strained is admitted'under pressure through a pipe .screwedinto extension 25,.thence through duct: 27' and opening28, past wall 37. of the lower part of the key'31 and opening 29" into the lower-or. inlet chamber 12,] at the left side of casing '10.? The 'oil "then passes through the strainer basket 19 which being of very fine Openings 22 and 23 and openings 28 and 29 are of substantially the same area, as is also the passage for the oil through hollow center 34: and the space alongside partition 37.

The passages in the upper part of the key 31 and openings 22 and 23 are wider and shorter than. the passages in the lower part of the key and openings-28 and 29 which are relatively longer and narrower because of the tapering shape of the key and the importance of keeping these passages of a uniform area.

In the position indicated in the drawings and just now described, oil is admitted into the left sideof the casing and discharged therefrom by virtue of the cut-out key 31 which deflects the flow of oil to and from that side of the casing, and the handle bar 39 is so attached to the spindle 38 of the key 31 that it points toward the left side of the casing which serves to indicate that the left side strainer is functioning as such. The lug 40 is pushed tightly against the left hand terminal 42of its travel. In this position, open ings 24 and 30 atthe rightside of the casing adjacent the key 31 are cut out by, respectively, walls 35 and 37. Opening 24 is symmetrically disposed at the right side of key 31 to opening 23 and is of the samesize and, similarly, opening 30 to opening 29. No oil therefore passes into the right hand side of the casing and through the right hand strainer basket 19. The right hand strainer can now u be cleaned easily by admitting steam, air or any other suitable purging medium through valve 47. elbow connection 16, duct 4.9 and groove .28 into the inlet chamber 12 at the right hand side of the casing and through openings 17 into the inside of the strainer basket. Here it forces all foreign matter around the outside of the basket away from the screen and blows it out through duct 64;, port 61, and outlet 65, its valve 66 having been opened for that purpose. This blowing out can be achieved very efficiently because the purging agent is blown through the strainer mesh in a direction opposite to the normal flow of the oil whereby all sediment caked around the outside of the basket is very quickly loosened. The groove 48 does not com-- municate with the left hand sideof the strainer therefore the purging agent does not enter that side and its functioning is not interfered ,to the right to the end of its travel as fixed 'with. and similarly. duct 63 is closed by the by lug 40, the above-described position and sealed toward that basket whichis not shut I functioning is exactly reversedy and instead 0 of the left hand strainenworking and the In testiinony whereof we have hereunto-set a .Vhandst aineriis worki -3nd the l fi; h d 7 ALBERT I 7 y Y strainer; cutout." The handle bar; 39 pointright hand strainerbeing' cutout,'the right our hands.

ingtoward the right side ofthe casing indicates' that the right; hand strainer "is functioning; In this position then',' the left hand I strainer can be blown out exactly in the manner described before in reference to the-right hand strainerbasket.v In 'otherl words,thatv strainer which is cut out of service can-be f cleaned by simply opening thecontrol valve for the purging medium attached to thecas ing and permitting the purging medium-to blow outthe impurities through the single outlet at the bottom ofthe strainer. It is im- Y possible to admit "a" purging medium into the working strainer, noropen j its drain outlet,

' because the peculiar arrangement of passages and ducts in the key permit of cleaning and blowing out of that strainer screen only which'is cut outof service It isobv'ious that while we have shown the common drain outlet 65 controlled by a valve;

66, this valve maybe entirely dispensed with and the impurities blown out by simplyopening valve 47. Various other changes in the form, proportions and minor details ofc'onstruction may be resorted to without depart- L ing from the principle or sacrificing any of I'the adyantages'of the invention as defined in the appended claims.-

V'Whatwe claim as new, is: I I p 1. A strainer for liquids comprising a structure having an 1nlet,an outlet, a purging COIlIlBCtlOII, a s ngle dram connection for both screens, a pair of strainer screens interposed in passages betweenthe saidvinletandoutlet v anda key having means forshutting off one v r of the screensfrom'the said inlet and outlet 7 and' means admitting a purging medium from the said purging connection 'to v th at" screen only which is shut OE for blowing'out accumulatedsediment throughjthesai-d drain b v connectlon and a wall over the said drain i 'f' connectlon permitting"clean ng of that: screen only which is shutoff,

2A strainer for liquids comprising a structure having an inl'et,,.an outlet," at purg y in rconnection a drain connection, a pair of strainer baskets interposed in passages bei w 7 tween the said inlet and outlet so that the liquid from the inlet will be admitted around the outside of the basket to the inside thereof b I andth'ence to the outlet, "and a key hav-ingl means for shutting off" one of the baskets from the said inlet and outlet and means for f admitting a purging,medium-fronrthe;said

purging connecti'onlto the inside off that strainer basket only which is shut off, the said key having a wall to block passages in the structure whereby the drain connect-ionis WALTER 

